tantae mōlis erat Rōmānam condere gentem, of so great difficulty was it to found the Roman race.
GENITIVE WITH ADJECTIVES.
[204]. The Genitive is used with many Adjectives to limit the extent of their application. Thus:—
1. With adjectives signifying desire, knowledge, familiarity, memory, participation, power, fullness, and their opposites; as,—
studiōsus discendī, desirous of learning;
perītus bellī, skilled in war;
īnsuētus labōris, unused to toil;
immemor mandātī tuī, unmindful of your commission;
plēna perīculōrum est vīta, life is full of dangers.
a. Some participles used adjectively also take the Genitive; as,—
diligēns vēritātis, fond of truth;
amāns patriae, devoted to one's country.
2. Sometimes with proprius and commūnis; as,—
virī propria est fortitūdō, bravery is characteristic of a man.
memoria est commūnis omnium artium, memory is common to all professions.
a. proprius and commūnis are also construed with the Dative.